Tool for washers



Feb. 10, 1942. s. SCHNELL TOOL FOR WASHERS Filed May 31, 1940 INVENT-ORSTE E SCHNELL B Y ATTORNEY Patented Feb. 10, 1942 UNE'E'ED STATES PATENTOFFICE TOOL FOR WASHERS Steve Schnell, Overland, Mo., assignor to WagnerElectric Corporation, St. Louis, Mo., a corporation of DelawareApplication May 31, 1940, Serial No. 338,143

2 Claims.

duce a tool which is so constructed that it can be employed for bothassembling and removing a C type of locking washer.

Another object of my invention is to produce a tool which, when employedto clamp a C type of washer in operative position, will so act on thewasher that it will cause it to be wrapped around the pin or shaft andat the same time prevent the washer from becoming dished or Warped.

Another object of my invention is to provide a special tool for clampinga particular type of C washer in operative position, said tool beingsimple in construction and efiicient in operation.

Other objects of my invention will become apparent from the followingdescription taken in connection with the accompanying drawing in whichFigure 1 is a side View of the tool, the handle thereof being shown insection; Figure 2 is a perspective view of the working end of the tool;Figure 3 is a view showing the tool in position prior to its movement toperform the clamping operation on the C washer; Figure 4 is a view takenon the line 4-4 of Figure 3; Figure 5 is a view similar to Figure 4 butshowing the position of the tool after the Washer has been operatedupon; Figure 6 is a view showing the position of the tool prior toremoving the washer; Figure 7 is a view taken on the line 1-1 of Figur 6and Figure 8 is a view similar to Figure 7 but showing the washer beingremoved by the tool.

Referring to the drawing in detail my improved tool comprises a rod Ihaving a somewhat Y shaped end formed by portions 2 and 3 having a slot4 therein. The portion 2 on the end of the tool is so constructed as tobe employed in clamping a C type washer of special construction to a pinor shaft and the portion 3 is so constructed as to be employed forremoving this washer from the pin or shaft.

The legs 5 and 6 on the portion 2 formed by the slot 4 are provided withflat end surfaces 1 and 8 which lie in a plane at an angle to the axisof the rod, said angle being shown at 30 degrees. The inner sides of theends of the legs 5 and 6 are provided with lands 9 and i0 and parallelwalls II and I2, said lands lying in a plane parallel to the plane ofthe end surfaces 1 and 8.

The end portion 3 of the tool has the ends of its legs I3 and I4 formedby the slot 4 provided that is at an angle to the axis of the rod, saidangle also being approximately 30 degrees. The legs are also providedwith additional parallel flat surfaces I1 and I8 and shoulders l9 and20.

5 The rod of the tool may be operated either manually or by power. Aconstruction that may be employed for manual operation is shown inFigure 1 and comprises a handle 2| having a bore 22 in which the rodextends. The intermediate portion of the rod carries an integralshoulder 23 for cooperation with a slidable collar 24 threaded in theopen end of the bore of the handle. The inner end of the rod in the borehas fixed thereto a collar 25 which acts as a stop for the collar 24.The construction permits the operator to give to the rod a hammer blowin its longitudinal direction by moving the handle rearwardly relativeto the rod and then bringing it forward with considerable speed. Thiswill result in the collar 24 of the handle striking the shoulder 23 anddriving the rod l forwardly. To increase the hammer. blow effect thehandle is made of heavy material.

The particular C type of washer 26 with which my improved tool isintended to cooperate comprises a fiat U-shaped member, the base portionof which is semi-circular in shape to fit against the bottom of anannular groove 21 provided in a pin or shaft 28 on which the washer isto be clamped. The'inner edges 29 and 30 of the legs 30 3| and 32 of thewasher are parallel and so spaced apart as to receive the shaft at thegroove. The outer edges 33 and 34 of the legs of the washer diverge inthe direction of the ends of the legs thus making the ends of the legswedge-shaped.

When my improved tool is employed to clamp the C type washer on the pinor shaft the washer is first positioned in the groove in the mannershown in Figures 3 and 4. The pin or shaft 23 may have mounted thereonthe usual take up washer 35 which lies against the member 36 that is tobe locked on the pin or shaft. The tool is first so positioned that thelands 9 and I0 will rest on the upper surfaces of the legs 32 and 3irespectively of the washer and the forward portion of the walls H and I2will engage the rear edges of the diverging surfaces 34 and 33respectively. If now the handle of the tool is pulled back and movedrapidly forward by one hand of the operator while the other hand gripsthe rod l to hold the tool in position, the end of the tool will bemoved towards the ends of the legs of the washer. This will result inthe walls II and I2 acting on the surfaces 34 and 33 and causing theends of the legs to be deformed toward each other with flat surfaces 15and I6 which lie in a plane in the manner shown in Figure 5. Since thespace between the ends of the legs is now less than the diameter of theshaft at the groove the washer will be clamped in position. It is to benoted the movement of the tool is toward the ends of the legs during theclamping operation and this insures that the washer will be maintainedin the groove during this operation.

The particular construction of the washer and the tool causes the washerto be wrapped around the shaft at the groove and as a result thereof thewasher will snugly grip the bottom of the groove over nearly two thirdsof its circumferential surface. The depth of the walls H and I2 is madeslightly less than the thickness of the material from which the washeris stamped and because of this the lands 9 and 19 will at all times bein direct contact with the upper surfaces of the legs of the washer.Because of the angle relation of the lands and the axis of the rod 1 ofthe tool a pressure will be produced on the top surfaces of the washerat the same time that the tool is being forced forwardly to perform theclamping operation. This pressure will prevent the washer from becomingdistorted or dished a condition which occurs when the old type of Cwasher has its legs clamped together by plyers or a like tool.

When it is desired to remove the washer, the surfaces H and I8 ofportion 3 are positioned to rest on the legs of the washer with theshoulders 19 and 26 in engagement with the ends of said legs, the shaftor pin projecting into the slot 4. By now operating the handle ofthe-tool to give a hammer blow to the rod I, the washer will be forcedoff the pin or shaft, th bottom of the groove of the shaft causing thelegs to spread apart and assure their original position. The pressure ofthe surfaces l1 and IS on the top of the legs will tend to hold thewasher flat during its removal from the shaft. Thus the washer is notdamaged in any serious manner and can again be used if desired.

Being aware of the possibilit of modification in the particularstructure herein described without departing from the fundamentalprinciples of my invention, I do not intend that its scope be limited asset forth by the appended claims.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A tool for clamping a fiat locking washer of the C type comprising alongitudinal member having a slot forming legs, the inner sides of thelegs adjacent their ends being provided with parallel walls for engagingside edges of the washer, each of said legs being provided on its innerside with a land adjacent and at a right angle to the wall thereof, saidlands being spaced inwardly from the ends of the legs and lying in thesame plane and said walls being of less depth than the thickness of thewasher whereby said lands can have pressure engagement with the topsurfaces of the portions of the washer, the side edges of which areengaged by the parallel walls.

2. A tool for clamping a locking washer of the C type to a pin or shaftand being provided with diverging outer edges on its legs, said toolcomprising a member having a slot therein for receiving the pin or shaftand provided with parallel surfaces on the sides of the slot for actingon the diverging edges to force the legs toward each other when the toolis moved in a direction from the back of the washer toward the ends ofthe legs, said sides of the slot also being provided with lands lying ina single plane at an acute angle with the longitudinal axis of themember and adapted to engage the top surfaces of the legs of the washerand apply pressure thereto during movement of the tool.

STEVE SCI-IN ELL.

